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  <meta name="description" content="背景描述日常开发工作中会遇到替换占位符的需求 例如给用户发验证码短信时需要拼接如下的字符串   “张三 欢迎使用,您的验证码是123456” , 其中用户名和验证码需要动态拼接,其他字符串都是固定的.  则这种情况下可以考虑使用commons-text,比自己实现字符串替换要好. 具体步骤引入 commons-text 的依赖 12345&lt;dependency&gt;    &lt;grou">
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          使用commons-text 进行占位符替换
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        <h1 id="背景描述"><a href="#背景描述" class="headerlink" title="背景描述"></a>背景描述</h1><p>日常开发工作中会遇到替换占位符的需求</p>
<p>例如给用户发验证码短信时需要拼接如下的字符串   “张三 欢迎使用,您的验证码是123456” , 其中用户名和验证码需要动态拼接,其他字符串都是固定的.  则这种情况下可以考虑使用commons-text,比自己实现字符串替换要好.</p>
<h1 id="具体步骤"><a href="#具体步骤" class="headerlink" title="具体步骤"></a>具体步骤</h1><p>引入 commons-text 的依赖</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag">&lt;<span class="name">dependency</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">groupId</span>&gt;</span>org.apache.commons<span class="tag">&lt;/<span class="name">groupId</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">artifactId</span>&gt;</span>commons-text<span class="tag">&lt;/<span class="name">artifactId</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">version</span>&gt;</span>1.9<span class="tag">&lt;/<span class="name">version</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">dependency</span>&gt;</span></span><br></pre></td></tr></table></figure>



<p>具体代码</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Test</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">test1</span><span class="params">()</span></span>&#123;</span><br><span class="line">        <span class="comment">/*</span></span><br><span class="line"><span class="comment">        * 演示最简单的使用方式</span></span><br><span class="line"><span class="comment">        * 这里默认的替换符就是$&#123;&#125;</span></span><br><span class="line"><span class="comment">        * */</span></span><br><span class="line">        Map&lt;String, Object&gt; params = <span class="keyword">new</span> HashMap&lt;String, Object&gt;();</span><br><span class="line">        params.put(<span class="string">&quot;userName&quot;</span>, <span class="string">&quot;admin&quot;</span>);</span><br><span class="line">        params.put(<span class="string">&quot;captcha&quot;</span>, <span class="string">&quot;123456&quot;</span>);</span><br><span class="line">        StringSubstitutor stringSubstitutor=<span class="keyword">new</span> StringSubstitutor(params);</span><br><span class="line">        String template = <span class="string">&quot;$&#123;userName&#125; 欢迎使用,您的验证码是$&#123;captcha&#125;&quot;</span>;</span><br><span class="line">        String result=stringSubstitutor.replace(template);</span><br><span class="line">        System.out.println(result);</span><br><span class="line">    &#125;</span><br></pre></td></tr></table></figure>




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